HC Deb 14 May 1908 vol 188 cc1334-5
*CAPTAIN FABER

I beg to ask the President of the Board of Trade whether he will call the attention of the railway companies to the invention now being used on American engines to avoid colour blindness, namely, the fitting of a disc of purple glass into the fire-box door of railway engines.

MR. CHURCHILL

I am advised that this device is of doubtful utility as among other reasons the fire-box door must be open when a man is firing.